http://www.opn.ca6.uscourts.gov/opinions.pdf/18a0205p-06.pdf
http://www.opn.ca6.uscourts.gov/opinions.pdf/18a0206p-06.pdf
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/09/18/17-30061.pdf
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/09/18/16-50439.pdf
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/09/18/16-17347.pdf
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/09/18/15-15791.pdf
https://www.ca10.uscourts.gov/opinions/17/17-3119.pdf
http://media.ca11.uscourts.gov/opinions/pub/files/201710189.pdf
http://media.ca11.uscourts.gov/opinions/pub/files/201710189.pdf
http://media.ca11.uscourts.gov/opinions/pub/files/201712091.pdf
https://www.cadc.uscourts.gov/internet/opinions.nsf/8AE80A6C0FBDFB7B8525830C004D863A/$file/16-1159-1751123.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.